Since 1992 Dezhen Chen has been working on municipal solid waste (MSW) incineration and the related pollution control when she began her master thesis, and with the similar topic she finished her Ph.D dissertation in 1997. From 2001 to 2002 she had been working in E & R, DTU, Technical University of Denmark especially on the field of incineration fly ashes disposal. In 2005 she had been promoted to be professor. In 2006 she worked in E & R, DTU again on the area of life cycle assessment (LCA) of waste management and technologies. Presently her main research fields include MSW recycle via thermochemical methodology such as waste to energy, pyrolysis and pyrolysis char utilization, gasification, flue gas cleaning and fly ash treatment and disposal.
She has published more than 130 papers in Chinese & international journals and own more than 20 patents, including 2 American patents